Developing quantum architectures that can scale to millions of qubits while maintaining quality represents a fundamental challenge. Current progress demonstrates that scalable approaches are possible though substantial work remains.
Scalability requires more than simply building larger systems. Qubit quality must be maintained, control complexity must remain manageable, and error rates must stay acceptably low.
Modular approaches where smaller quantum processors connect through quantum networks may enable scaling. This architecture divides the scaling challenge into more manageable pieces.
Manufacturing reproducibility becomes critical for scalability. Producing thousands or millions of consistent, high-quality qubits requires advanced fabrication processes.
Control and readout systems must scale alongside qubit counts. The electronics and software managing large quantum systems present substantial engineering challenges.
Different quantum computing platforms face different scalability challenges. Comparing how various approaches address scaling helps identify most promising paths forward.